Setting up X

I have NetBSD 6.1 installed on an ASUS laptop. The video card is an
NVIDIA GeForce GTX 560M, and is currently unsupported with xorg's nv
driver. I would like to get this working with the vesa driver, but have
come to a dead end with X -configure.
This is the Xorg.o.log: http://pastebin.com/Su60241w
The output from running X -configure: http://pastebin.com/GLZYeBJq
And the resulting xorg.conf.new file: http://pastebin.com/bsiMk7k2
Didn't this used to automatically fall back to the vesa driver when
finding an unsupported card? Just changing nv to vesa in the xorg.conf
file does not seem to be enough.